I am using a globally recognized certificate with my openldap server
which is issued by a Child CA trusted by the Root CA of my
certificate provider. Is there any possible way to include the Child
CA certificate within the server certificate chain?

I have file (on Linux) /etc/ssl/certs/trivore-ca-bundle.crt, which looks
like

Just having appropriate/relevant lines in ldap.conf makes the client
work nicely with the server.

Same goes, if you import the rootCA and subordinateCA (CA01) to your
Windows box. There is a separate slot on Windows for root and
intermediate/subordinate CAs. ...but that goes outside the scope of
this list.

The thing is that I have couple of windows based clients using my
openldap server and I can't make them verify the server certificate.
The Root CA is included in the trusted Root CAs Windows store, but
since the Child CA ain't there and doesn't appear in the certificate
chain the clients could not verify the server certificate and give up
with an error unless they are being configured to ignore errors.

That's the reason why I would like to include the Child CA /Signing
CA/ certificate within the server certificate chain which will allow
those clients to confirm server's certificate and its signing CA
certificate against the trusted root CA.

Is there any possible way to achieve that and is it up to
configuration?